CoolROM.com's game information and ROM download page for Pokemon Red (Gameboy Color).

01xx1ED1 Pick your Starting Pokemon:
After you pick your pokemon save the game and turn it off. When you turn it back on fight gary for the first time andit will work properly. Change the xx's to a number from the list. Pick your starting PokeMon from the 3 balls at the start of the game. Pick PokeMon from list. All balls will have the same one. It will ask you if you want the type of pokemon that is& normaly there but you will get what you picked.

• Download Pokemon Fire Red Version ROM For GBA Emulator. How To Use Pokemon Fire Red ROM On Computer.
• Download and play the Pokemon - Yellow Version ROM using your favorite GBC emulator on your computer or phone.
• Pokemon Red is a first-generation Pokemon game and is one of the first three Pokemon games (red, blue, green) to come up to the Game boy. In this game, your goal is simple: Become the next Pokemon League Champion! Starting with your very first starter Pokemon you must try and collect all Pokemon and defeat all gym leaders to get the right to.

After you pick your pokemon save the game and turn it off. When you turn it back on fight Gary for the first time andit will work properly.

01xxD8CF Pick the Pokemon you want to fight and capture anytime.
Change the xx's to a number from the list. This code will cause you to always fight the same Pokemon. Thus you will be able to capture it. Sometimes the picture of the pokemon will be messed up, but you can still get it without problems later on. Use my store codes to get some MasterBalls from anystore.(Master balls cost 0 and always catch even if you don't weaken the Pokemon.)

00 Missinggo
99 Bulbasaur 001 09 Ivysaur 002 9A Venusaur 003
B0 Charmander 004 B2 Charmeleon 005
B4 Charizard 006 B1 Squirtle 007 B3 Wartortle 008
1C Blastoise 009 7B Caterpie 010 7C Metapod 011
7D Butterfree 012 70 Weedle 013 71 Kakuna 014
72 Beedrill 015 24 Pidgey 016 96 Pidgeotto 017
97 Pidgeot 018 A5 Rattata 019 A6 Raticate 020
05 Spearow 02123 Frearow 022 6C Ekans 023
2D Arbok 024 54 Pikachu 025 55 Raichu 026
60 Sandshrew 027 61 Sandslash 028
0F Nidoran(femal) 027 A8 Nindorina 030
10 NidoQueen 031 03 Nidoran(male) 032
A7 Nindorino 033 07 NidoKing 034 04 Clefairy 035
8E Clefable 036 52 Vulpix 037 53 Ninetales 038
64 Jigglypuff 039 65 Wigglytuff 040 6B Zubat 041
82 Golbat 042 B9 Oddish 043 BA Gloom 044
BB Vileplume 045 6D Paras 046 2E Parasect 047
41 Venonat 048 77 Venomoth 049 3B Diglett 050
76 Dugtrio 051 4D Meowth 052 90 Persian 053
2F Psyduck 054 80 Goldduck 055 39 Mankey 056
75 Primeape 057 21 Growlithe 058 14 Arcanine 059
47 Poliwag 060 6E Poliwhirl 061 6F Poliwrath 062
94 Abra 063 26 Kadabra 064 95 Alakazam 065
6A Machop 066 29 Machoke 067 7E MachAmp 068
BC Bellsprout 069 BD Weepinbell 070
BE Victreebell 071 18 Tentacool 072
9B Tentacruel 073 A9 Geodude 074 27 Graveler 075 31
Golem 076 A3 Ponyta 077 A4 Rapidash 078
25 Slowpoke 079 08 Slobro 080 AD Magnemite 081
36 Magneton 082 40 Farfetch'd 083 46 Doduo 084
74 Triplebird 085 3A Seel 086 78 Dewgong 087
0D Grimer 088 88 Muk 089 17 Shellder 090
8B Cloyster 091 19 Gastly 092 93 Haunter 093
0E Gengar 094 22 Onix 095 30 Drowzee 096
81 Hypno 097 4E Krabby 098 8A Kingler 099
06 Voltorb 100 8D Electrode 101 0C Exeggcute 102
0A Exeggutor 103 11 Cubone 104 91 Marowak 105
2B Hitmonlee 106 2C Hitmonchan 107
0B Lickitung 108 37 Koffing 109 8F Weezing 110
12 Rhyhorn 111 01 Rhydon 112 28 Chansey 113
1E Tangela 114 02 Kangaskhan 115 5C HorSea 116
5D SeaDra 117 9D Goldeen 118 9E Seaking 119
1B Staryu 120 98 Starmie 121 2A Mr. Mime 122
1A Scyther 123 48 Jynx 124 35 Electabuzz 125
33 Magmar 126 1D Pinsir 127 3C Tauros 128
85 Magikarp 129 16 Gyarados 130 13 Lapras 131
4C Ditto 132 66 Eevee 133 69 Vaporeon 134
68 Jolteon 135 67 Flareon 136 AA Porygon 137
62 Omanvste 138 63 Omastar 139 5A kabuto 140
5B Kabutops 141 AB Aerodactyl 142 84 Snorlax 143 4A
Articuro 144 4B Zapdos 145 49 Moltres 146
58 Dratini 147 59 Dragonair 148 42 Dragonite 149
83 Mewtwo 150 15 Mew151

Buy masterballs at the pokemart
To buy masterballs at the pokemarts for free type in 01017CCF

To have infinite 'Safari Zone' balls
016447DA

To have infinite 'Safari Zone' time
01f00ED7

To have infinite 'Casino Coin'
0199A4D5+0199A5D5

Get Mew Anywhere
Enter 0115D8CF
Enter this then when you go to any field you will see the pokemon as normal but when you capture it and get it from your pc it will be pokemon #151 Mew. His data will not be in the pokedex though. I have only tested the code on the red version but i assume that it works on both versions. He will only be the lvl that the pokemon that you caught was so I'd go to the mysterious dungeon to get Mew since there are more powerful pokemon there. This pokemon can be traded with the link cable and as far as i know it will not damage either games saved data in any way

Get Mew (A better Way) submitted By Jay

First enter 0115D8CF. Then go into a patch of tall grass and walk around until you get into a fight with a Pokemon. It should appear glitched. Capture it. It should be a Mew. Once you catch it, it should be normal, and *GLITCH FREE*. The PokeDex even updates data! Have fun with this one.

level up to L255
You put 1FF8CD1 and your first Pokemon in the list will be 255
level ok
Get master balls] By Atp191@aol.com 10/20/98

01011ED3
(Note: Make sure you dont have anything valuable in the items box because it will delete those items and overwrite them with master balls.) Be cautious while using the master ball code it is known to make the game very dull and unexciting because of the easiness of catching the pokemon. I would only use the master balls on the three legendary birds,Mewtwo. [Get BulbasaurSquirtle and Charmander] By Nick 11/15/98

try doing 0199d8cf for bulbasaur try doing 01b0d8cf for charmander try doing 01b1d8cf for squirtle Get Eevee and it's evolution] By Nick 11/15/98

try doing 0166d8cf for eevee change 66 to 67 for flareon 68 for jolteon 69 for vapoeon Inifinate Money] By StingDC 10/21/98

I found an infinite money cheat for gameshark on US version,it works on both versions,019947d3-019948d3-019949d3 The codes are Arcanine:0114D8CF Larpas:0113D8CF Ryhorn:0112D8CF CUBONE:0111D8CF Gyrados:0116D8CF AND JUST KEEP ON CHANGING THAT NUMBER YOU CAN GET GHASTLY SYTHER AND STARYU MAYBE MORE BUT I HAVENT FINISHED YET

This Gameshark code will allow you to buy things that you can't buy,like the Dome Fossil,Master Balls,Rare Candy,and PP Up. The code is 01xx7ccf. Replace xx with:

1st Pokemon In Battle Codes
4 Infinite PP (1st Position) 01282DD0
5 Infinite PP (2nd Position) 01282ED0
6 Infinite PP (3rd Position) 01282FD0
7 Infinite PP (4th Position) 012830D0
8 Skill Modifier (1st Position) 01??1CD0
9 Skill Modifier (2nd Position) 01??1DD0
10 Skill Modifier (3rd Position) 01??1ED0`
11 Skill Modifier (4th Position) 01??1FD0
1st Pokemon Out Of Battle Codes
12 Infinite PP (1st Position) 01FF88D1
13 Infinite PP (2nd Position) 01FF89D1
14 Infinite PP (3rd Position) 01FF8AD1
15 Infinite PP (4th Position) 01FF8BD1
16 Skill Modifier (1st Position) 01??73D1
17 Skill Modifier (2nd Position) 01??74D1
18 Skill Modifier (3rd Position) 01??75D1
19 Skill Modifier (4th Position) 01??76D1
20 Level Modifier 01??8CD1
21 Max HP Modifier (Smaller) 01??8ED1
22 Max HP Modifier (Larger) 01??8DD1
23 Max Attack Modifier (Smaller) 01??90D1
24 Max Attack Modifier (Larger) 01??8FD1
25 Max Defense Modifier (Smaller) 01??92D1
26 Max Defense Modifier (Larger) 01??91D1
27 Max Speed Modifier (Smaller) 01??94D1
28 Max Speed Modifier (Larger) 01??93D1
29 Max Special Modifier (Smaller) 01??96D1
30 Max Special Modifier (Larger) 01??95D1
Item Codes
31 Total Item Number Modifier [Note 1] 01??1DD3
32 Item Modifier 1st Position 01??1ED3
33 Infinite Quantity 1st Position 01631FD3
34 Item Modifier 2nd Position 01??20D3
35 Infinite Quantity 2nd Position 016321D3
36 Item Modifier 3rd Position 01??22D3
37 Infinite Quantity 3rd Position 016323D3
38 Item Modifier 4th Position 01??24D3
39 Infinite Quantity 4th Position 016325D3
40 Item Modifier 5th Position 01??26D3
41 Infinite Quantity 5th Position 016327D3
42 Item Modifier 6th Position 01??28D3
43 Infinite Quantity 6th Position 016329D3
44 Item Modifier 7th Position 01??2AD3
45 Infinite Quantity 7th Position 01632BD3
46 Item Modifier 8th Position 01??2CD3
47 Infinite Quantity 8th Position 01632DD3
48 Item Modifier 9th Position 01??2ED3
49 Infinite Quantity 9th Position 01632FD3
50 Item Modifier 10th Position 01??30D3
51 Infinite Quantity 10th Position 016331D3
Quantity Digits to Accompany Item Modifier Codes
01xx7ccf
00 - ?????
01 - Master Ball
02 - Ultra Ball
03 - Great Ball
04 - PokeBall
05 - Town Map
06 - Bicycle
07 - Surf Without Pokemon
08 - Safari Ball
09 - PokeDex
0A - Moon Stone
0B - Antidote
0C - Burn Heal
0D - Ice Heal
0E - Awakening
0F - Parlyz Heal
10 - Full Restore
11 - Max Potion
12 - Hyper Potion
13 - Super Potion
14 - Potion
15 - Boulder Badge
16 - Cacade Badge
17 - Thunder Badge
18 - Rainbow Badge
19 - Soul Badge
1A - Marsh Badge
1B - Volcano Badge
1C - Earth Badge
1D - Escape Rope
1E - Repel
1F - Old Amber
20 - Fire Stone
21 - Thunder Stone
22 - Water Stone
23 - HP Up
24 - Protein
25 - Iron
26 - Carbos
27 - Calcium
28 - Rare Candy
29 - Dome Fossil
2A - Helix Fossil
2B - Secret Key
2C - ?????
2D - Bike Voucher
2E - X Accuracy
2F - Leaf Stone
30 - Card Key
31 - Nugget
32 - PP Up
33 - PokeDoll
34 - Full Heal
35 - Revive
36 - Max Revive
37 - Grand Special
38 - Super Repel
39 - Max Repel
3A - Dire Hit
3B - Coin
3C - Fresh Water
3D - Soda Pop
3E - Lemonade
3F - S.S. Ticket
40 - Gold Teeth
41 - X Attack
42 - X Defend
43 - X Speed
44 - X Special
45 - Coin Case
46 - Oak's Parcel
47 - Item Finder
48 - Silph Scope
49 - PokeFlute
4A - Lift Key
4B - Exp. All
4C - Old Rod
4D - Good Rod
4E - Super Rod
4F - PP Up
50 - Ether
51 - Max Ether
52 - Elixer
53 - Max Elixer

Quantity Digits to Accompany Skill Modifier Codes
00 - Nothing
01 - Pound
02 - Karate Chop
03 - Double Slap
04 - Comet Punch
05 - Mega Punch
06 - Pay Day
07 - Fire Punch
08 - Ice Punch
09 - Thunder Punch
0A - Scratch
0B - Vice Grip
0C - Guillotine
0D - Razor Wind
0E - Swords Dance
0F - Cut
10 - Gust
11 - Wing Attack
12 - Whirl Wind
13 - Fly
14 - Bird
15 - Slam
16 - Vine Whip
17 - Stomp
18 - Double Kick
19 - Mega Kick
1A - Jump Kick
1B - Rolling Kick
1C - Sand Attack
1D - Head Butt
1E - Horn Attack
1F - Fury Attack
20 - Horn Drill
21 - Tackle
22 - Body Slam
23 - Wrap
24 - Take Down
25 - Thrash
26 - Double Edge
27 - Tail Whip
28 - Poison Sting
29 - Twin Edle
2A - Pin Missile
2B - Leer
2C - Bite
2D - Growl
2E - Roar
2F - Sing
30 - Supersonic
31 - Sonicboom
32 - Disable
33 - Acid
34 - Ember
35 - Flamethrower
36 - Mist
37 - Water Gun
38 - Hydro Pump
39 - Surf
3A - Ice Beam
3B - Blizzard
3C - Psybeam
3D - Bubblebeam
3E - Aurora Beam
3F - Hyper Beam
40 - Peck
41 - Drill Peck
42 - Submission
43 - Low Kick
44 - Counter
45 - Seismic Toss
46 - Strength
47 - Absorb
48 - Mega Drain
49 - Leech Seed
4A - Growth
4B - Razor Leaf
4C - Solar Beam
4D - Poisonpowder
4E - Stun Spore
4F - Sleep Powder
50 - Petal Dance
51 - String Shot
52 - Dragon Rage
53 - Fire Spin
54 - Thundershock
55 - Thunderbolt
56 - Thunder Wave
57 - Thunder
58 - Rock Throw
59 - Earthquake
5A - Fissure
5B - Dig
5C - Toxic
5D - Confusion
5E - Psychic
5F - Hypnosis
60 - Meditate
61 - Agility
62 - Quick Attack
63 - Rage
64 - Teleport
65 - Night Shade
66 - Mimic
67 - Screech
68 - Double Team
69 - Recover
6A - Harden
6B - Minimize
6C - Smoke Screen
6D - Confuse Ray
6E - Withdraw
6F - Defense Curl
70 - Barrier
71 - Light Screen
72 - Haze
73 - Reflect
74 - Focus Energy
75 - Hide
76 - Metronome
77 - Mirror Move
78 - Selfdestruct
79 - Egg Bomb
7A - Lick
7B - Smog
7C - Sludge
7D - Bone Club
7E - Fire Blast
7F - Waterfall
80 - Clamp
81 - Swift
82 - Skull Bash
83 - Spike Cannon
84 - Constrict
85 - Amnesia
86 - Kinesis
87 - Softboiled
88 - Hi Jump Kick
89 - Glare
8A - Dream Eater
8B - Poison Gas
8C - Barrage
8D - Leech Life
8E - Lovely Kiss
8F - Sky Attack
90 - Transform
91 - Bubble
92 - Dizzy Punch
93 - Spore
94 - Flash
95 - Psywave
96 - Splash
97 - Acid Armor
98 - Crabhammer
99 - Exposion
9A - Fury Swipes
9B - Bonemerang
9C - Rest
9D - Rock Slide
9E - Hyper Fang
9F - Sharpen
A0 - Conversion
A1 - Tri Attack
A2 - Super Fang
A3 - Slash
A4 - Substitute
A5 - Struggle

enter 01xx82cf
replace the xs with c5 for hm02 c6 for hm03 c7 for hm04 c8 for hm05 and c4 for hm01. to get tms you just have to raise the number by one number or lettor. i only tried it on the red it'll probably work on both versions.

Infinite Energy
01ff16d0

No Random Battles 01033cd1

Reversing Pokemon Red and Blue (Game Boy)

Edit on Github | Updated: 1st June 2021

The Pokemon Reverse Engineering Team (PRET) have managed to pull off a marvellous achievement, they have fully reverse engineered Pokemon Red and Blue back into Z80 assembly code ¹.

The source code they have developed can be assembled back into a 100% identical ROM image as was written to the game cartridges. This opens the door to anyone who ever wondered how these classic games worked, how they were implemented and how to modify them.

With this repository you can do anything you ever dreamed of changing in the original pokemon games, add your own custom pokemon, towns, music, sprites, translations or even modify how the core gameplay works.

The game was developed by only 5 programmers at Game Freak and released in Japan in early 1996.

However It took two and a half years to modify the original Japanese Pokemon red/green to the western Pokemon red/blue releases due to the memory limitations of the gameboy cartridge and english taking up more space than the Japanese text ².

Early Content

Of course as it was released in 1996 the development of the game goes back years before that, presumably to early 1990. The group Helix Chamber has released beta content for red/green to give an insight into the evolution of the designs of the Pokemon and maps ³.

Development Tools

Official Development Hardware

The developers were using an IBM PC running either MSDOS or Windows 95/NT as the DMG software development kit only runs on these systems. This would be paired with a DMG-ICE Debugger/Emulator that allowed the developers to test how the game ran on the real hardware.

Gameboy (DMG & GBC) Development Kit Hardware

For more information about the DMG-ICE and other development hardware check out this post.

Software Development Kit

It is very likely that Game Freak used the official Software Development kit provided by Intelligent Systems. This would give them the IS Assembler and Linker programs needed to build the game into a working rom.

Cartridge and Development Hardware

The Game was cut on to 2 megabyte cartridges meaning assets needed to be optimised or cut in order to fit everything on the cartridge. Thus was even more evident in the Western releases due to the english text being larger than the original Japanese ². So Pokemon names, dialog and even maps needed to be optimised to take up less space.

If you want to be able to assemble the source code back into the original rom you will need to download a few tools and of course the source code for the pokered project available here: pret/pokered

Pokemon Red Blue Emulator Pc

It is generally easier to build the project on MacOSX or Linux but for windows you can use Cygwin. So if you are on windows make sure to download Cygwin or any other linux-like shell for windows.

The first thing to download would be the assembler, this is what converts the source code from assembly language into machine code (the ROM). The pokered project is written for the rgbds assembler which you can download from: https://github.com/rednex/rgbds.You can download either the prebuilt binaries for win/linux or build it yourself by cloning the git project and running sudo make install.

Now you should be able to use rgbds tools from the command line, so you can go to where you downloaded the pokered project and simply run make.

Pokemon Red Blue Emulator

If all goes well it will generate pokered.gbc and pokeblue.gbc whih are byte-identical versions of the retail ROMS! If it didn’t go well check out the install instructions: pokered/INSTALL.md · pret/pokered

Trade Pokemon Red Blue Emulator

In the pokered source code the maps are saved as .blk files, these files are small binary files and can be edited in a tool called RBMap.